Finding the Fourth Proportional to 209,152.68, 288,584.10 and 118,500.72

Step by Step Solution

1. Step 1: Write the proportion equation
   209,152.68 : 288,584.10 = 118,500.72 : x
2. Step 2: Convert to fraction form
   209,152.68/288,584.10 = 118,500.72/x
3. Step 3: Cross multiply
   209,152.68x = 288,584.10 × 118,500.72
4. Step 4: Simplify right side
   209,152.68x = 34,197,423,630.55
5. Step 5: Solve for x
   x = 34,197,423,630.55/209,152.68
6. Step 6: Final answer
   x = 163,504.59